<!--SIF Implementation Specification 2.2-6 (March 17, 2008)-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" targetNamespace="http://www.sifinfo.org/infrastructure/2.x" xmlns:sif="http://www.sifinfo.org/infrastructure/2.x" elementFormDefault="qualified">
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="imports/xml/xml.xsd" />
  <xs:simpleType name="SAFETYTimeType">
    <xs:restriction base="xs:token">
      <xs:enumeration value="100" />
      <xs:enumeration value="110" />
      <xs:enumeration value="120" />
      <xs:enumeration value="130" />
      <xs:enumeration value="140" />
      <xs:enumeration value="150" />
      <xs:enumeration value="197" />
      <xs:enumeration value="200" />
      <xs:enumeration value="210" />
      <xs:enumeration value="220" />
      <xs:enumeration value="300" />
      <xs:enumeration value="310" />
      <xs:enumeration value="320" />
      <xs:enumeration value="397" />
      <xs:enumeration value="999" />
    </xs:restriction>
  </xs:simpleType>
</xs:schema>